Hand brake test fixture

Abstract

The utility model discloses a hand brake test frock, including mounting bracket, and mounting bracket includes upper frame body and lower frame body, and the top of upper frame body is equipped with vertical support plate, and the upper portion of vertical support plate front end surface is equipped with support platform and screw support, and the top of support platform is equipped with fixed frame, and fixed frame rotation is connected with brake swing lever, and the inner end of brake swing lever is connected with bevel gear set, and bevel gear set is connected with screw, and the bottom of screw is connected with screw support, and one side of screw is equipped with slide, and the lower part of screw and slide is connected with support block, and support block is connected with connecting rod through the rotation of pivot and nut, and the bottom of connecting rod is connected with steel wire, and steel wire is connected with brake structure fixed on brake structure fixed mechanism after the first pulley frame, second pulley frame, bracket and pulley seat. Solve the problem that the brake structure of existing train has no equipment to test its extrusion degree.

Description

Technical Field

[0001] This utility model relates to the field of equipment for processing handbrakes, and in particular to a handbrake testing fixture. Background Technology

[0002] When manufacturing trains, there is a standard for the force with which the brake structure compresses the wheels. Materials and structures are often designed according to this standard. However, the actual production process is affected by various factors, such as material quality, the control of details such as heating temperature and time during production, and the impact of assembly tolerances. Therefore, even products manufactured according to the standard design may have insufficient compressive force in the brake structure, which can lead to safety issues after delivery. Currently, there is no equipment to test the compressive force of the brake structure of the manufactured train. Therefore, it is necessary to design a tooling to change this situation and improve the safety of the train after delivery. Utility Model Content

[0003] The purpose of this invention is to provide a handbrake testing fixture to solve the problem that there is no equipment available to test the compressive force of the existing train brake structure.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A handbrake testing fixture includes a mounting frame, comprising an upper frame and a lower frame. The upper frame has a vertical support plate at its top. A support platform and a screw support are sequentially arranged from top to bottom on the upper part of the front face of the vertical support plate. A fixed frame is provided on the top of the support platform. A braking rocker arm is rotatably connected to the front end of the fixed frame. The inner end of the braking rocker arm is connected to a bevel gear set within the fixed frame. A horizontally arranged bevel gear in the bevel gear set is connected to the top of a vertically arranged screw. The screw is vertically downward, and its bottom is connected to a screw support. One side of the screw has a screw... The slide rod is arranged in parallel with the screw rod. The lower part of the screw rod is threadedly connected to a support block. The support block and the slide rod are slidably engaged. The front and rear faces of the support block are connected to vertically arranged connecting rods through a rotating shaft and a nut. The bottom of the connecting rod is connected to a test steel wire. The middle of the bottom surface of the lower frame is provided with a first pulley frame, a second pulley frame, a bracket, and a pulley seat in sequence from front to back. The two sides of the middle front of the lower frame are also provided with automatic rod unit connection structures. The test steel wire is wound around the first pulley frame, the second pulley frame, the bracket, and the pulley seat and then connected to the brake structure fixed on the brake structure fixing mechanism.

[0005] During testing, the brake structure is fixed to the brake structure fixing mechanism, and then a steel wire is connected. After the connection is made, the brake rocker is cranked, which controls the rotation of the screw. When the screw rotates, the support block moves up and down along the screw and the slide rod. The slide rod acts as a limit to prevent the support block from rotating with the screw. When the support block moves up and down, it drives the connecting rod to move up and down, which can achieve the traction of the steel wire. When the steel wire is traction, it will move the brake structure closer to the test wheel installed below the mounting frame, so as to test whether the brake structure is qualified.

[0006] As a further preferred embodiment of this utility model, the longitudinal section of the support platform is an inverted "U" shape.

[0007] As a further preferred embodiment of this utility model, the sliding rod support includes a "T"-shaped connecting plate and a connecting block. There are two "T"-shaped connecting plates, which are symmetrically arranged along the center line of the vertical support plate. The connecting block is arranged between the two "T"-shaped connecting plates, and both ends of the connecting block are connected to the "T"-shaped connecting plates.

[0008] As a further preferred embodiment of this utility model, pulleys are provided at the lower part of the first pulley frame, the lower part of the second pulley frame, the top surface of the bracket base plate, and the middle part of the pulley seat.

[0009] As a further preferred embodiment of this utility model, a force measuring plate is provided behind the pulley seat on the bottom surface of the lower frame, and a tension sensor is provided at the force measuring plate.

[0010] It can monitor tensile force.

[0011] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: 1. During testing, the brake structure is fixed to the brake structure fixing mechanism, and then the steel wire is connected. After the connection is made, the brake rocker is turned. The screw is rotated by the brake rocker. When the screw rotates, the support block moves up and down along the screw and the slide rod. The slide rod acts as a limit to prevent the support block from rotating with the screw. When the support block moves up and down, it drives the connecting rod to move up and down, which can realize the traction of the steel wire. When the steel wire is traction, it will drive the brake structure to move closer to the test wheel installed below the mounting frame, so as to test whether the brake structure is qualified.

[0012] 2. It can monitor tensile force. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 for Figure 1 The main view.

[0015] Figure 3 This is a schematic diagram of a bevel gear set. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are... This falls within the scope of protection of this utility model.

[0018] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Specific Implementation Example 1 Figure 1 , Figure 2 , Figure 3 A handbrake testing fixture is shown, including a mounting frame comprising an upper frame 1 and a lower frame 2. The upper frame 1 has a vertical support plate 3 at its top. From top to bottom, a support platform 4 and a screw support 5 are sequentially arranged on the upper part of the front face of the vertical support plate 3. A fixing frame 6 is provided on the top of the support platform 4. A braking rocker arm 11 is rotatably connected to the front end of the fixing frame 6. The inner end of the braking rocker arm 11 is connected to a bevel gear set 12 inside the fixing frame 6. A horizontally arranged bevel gear in the bevel gear set 12 is connected to the top of a vertically arranged screw 13. The screw 13 is vertically downward-pointing, and its bottom is connected to the screw support 5. One side of the screw 13 has a screw... A parallel sliding rod 14 is provided. The lower part of the screw 13 is threadedly connected to a support block 15. The support block 15 and the sliding rod 14 are slidably engaged. The front and rear faces of the support block 15 are connected to a vertically arranged connecting rod 16 through a rotating shaft and a nut. The bottom of the connecting rod 16 is connected to a test wire 17. The middle part of the bottom surface of the lower frame 2 is provided with a first pulley frame 7, a second pulley frame 8, a bracket 9 and a pulley seat 10 from front to back. The two sides of the middle front part of the lower frame 2 are also provided with a rod system automatic unit connection structure. The test wire is wound around the first pulley frame 7, the second pulley frame 8, the bracket 9 and the pulley seat 10 and then connected to the brake structure fixed on the brake structure fixing mechanism 19.

[0023] During testing, the brake structure is fixed to the brake structure fixing mechanism, and then a steel wire is connected. After the connection is made, the brake rocker is cranked, which controls the rotation of the screw. When the screw rotates, the support block moves up and down along the screw and the slide rod. The slide rod acts as a limit to prevent the support block from rotating with the screw. When the support block moves up and down, it drives the connecting rod to move up and down, which can achieve the traction of the steel wire. When the steel wire is traction, it will move the brake structure closer to the test wheel installed below the mounting frame, so as to test whether the brake structure is qualified. Specific Implementation Example 2 This embodiment further describes the support platform 4 based on specific embodiment 1. The longitudinal section of the support platform 4 is an inverted "U" shape. Specific Implementation Example 3 This embodiment further describes the screw support 5 based on specific embodiment 1. The screw support 5 includes a "T"-shaped connecting plate 51 and a connecting block 52. There are two "T"-shaped connecting plates 51, which are symmetrically arranged along the center line of the vertical support plate 3. The connecting block 52 is arranged between the two "T"-shaped connecting plates 51, and both ends of the connecting block 52 are connected to the "T"-shaped connecting plate 51. Specific Implementation Example 4 This embodiment further describes the first pulley frame 7 based on specific embodiment 1. Pulleys are provided at the lower part of the first pulley frame 7, the lower part of the second pulley frame 8, the top surface of the base plate of the bracket 9, and the middle part of the pulley seat 10. Specific Implementation Example 5 This embodiment further describes the lower frame 2 based on specific embodiment 1. The lower frame 2 is provided with a first force measuring plate 12 and a second force measuring plate 13 in sequence behind the pulley seat 10 on the bottom surface of the lower frame 2.

[0028] It can monitor tensile force.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A handbrake testing fixture, characterized in that: The mounting bracket includes an upper frame (1) and a lower frame (2). The upper frame (1) has a vertical support plate (3) on its top. The upper part of the front face of the vertical support plate (3) has a support platform (4) and a screw support (5) arranged from top to bottom. The support platform (4) has a fixed frame (6) on its top. The front end of the fixed frame (6) is rotatably connected to a braking rocker arm (11). The inner end of the braking rocker arm (11) is connected to a bevel gear set (12) inside the fixed frame (6). The bevel gear set (12) is horizontally arranged and connected to the top of a vertically arranged screw (13). The screw (13) is vertically downward. The bottom of the screw (13) is connected to the screw support (5). One side of the screw (13) has a support set parallel to the screw (13). The slide rod (14) has a support block (15) threadedly connected to the lower part of the screw (13). The support block (15) and the slide rod (14) are slidably engaged. The front and rear faces of the support block (15) are connected to a vertically arranged connecting rod (16) through a rotating shaft and a nut. The bottom of the connecting rod (16) is connected to a test wire (17). The middle part of the bottom surface of the lower frame (2) is provided with a first pulley frame (7), a second pulley frame (8), a bracket (9) and a pulley seat (10) in sequence from front to back. The two sides of the middle front part of the lower frame (2) are also provided with a rod system automatic unit connection structure. The test wire is wound around the first pulley frame (7), the second pulley frame (8), the bracket (9) and the pulley seat (10) and then connected to the brake structure fixed on the brake structure fixing mechanism (19).

2. The handbrake testing fixture according to claim 1, characterized in that: The longitudinal section of the support platform (4) is an inverted "U" shape.

3. The handbrake testing fixture according to claim 1, characterized in that: The screw support (5) includes a "T"-shaped connecting plate (51) and a connecting block (52). There are two "T"-shaped connecting plates (51), which are symmetrically arranged along the center line of the vertical support plate (3). The connecting block (52) is arranged between the two "T"-shaped connecting plates (51), and both ends of the connecting block (52) are connected to the "T"-shaped connecting plate (51).

4. The handbrake testing fixture according to claim 1, characterized in that: Pullers are provided at the lower part of the first pulley frame (7), the lower part of the second pulley frame (8), the top surface of the base plate of the bracket (9), and the middle part of the pulley seat (10).

5. The handbrake testing fixture according to claim 1, characterized in that: A force measuring plate (18) is provided behind the pulley seat (10) on the bottom surface of the lower frame (2), and a tension sensor is provided at the force measuring plate (18).

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